protected static boolean isTileVisible( DrawContext dc, Tile tile, double minDistanceSquared, double maxDistanceSquared) { if (!tile.getSector().intersects(dc.getVisibleSector())) return false; View view = dc.getView(); Position eyePos = view.getEyePosition(); if (eyePos == null) return false; Angle lat = clampAngle( eyePos.getLatitude(), tile.getSector().getMinLatitude(), tile.getSector().getMaxLatitude()); Angle lon = clampAngle( eyePos.getLongitude(), tile.getSector().getMinLongitude(), tile.getSector().getMaxLongitude()); Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d); double distSquared = dc.getView().getEyePoint().distanceToSquared3(p); //noinspection RedundantIfStatement if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false; return true; }
protected void movePolygon(Point previousMousePoint, Point mousePoint) { // Intersect a ray through each mouse point, with a geoid passing through the reference // elevation. // If either ray fails to intersect the geoid, then ignore this event. Use the difference // between the two // intersected positions to move the control point's location. View view = this.wwd.getView(); Globe globe = this.wwd.getModel().getGlobe(); Position refPos = this.polygon.getReferencePosition(); if (refPos == null) return; Line ray = view.computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY()); Line previousRay = view.computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY()); Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), ray); Vec4 previousVec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), previousRay); if (vec == null || previousVec == null) { return; } Position pos = globe.computePositionFromPoint(vec); Position previousPos = globe.computePositionFromPoint(previousVec); LatLon change = pos.subtract(previousPos); this.polygon.move(new Position(change.getLatitude(), change.getLongitude(), 0.0)); }
protected void dragWholeShape(DragSelectEvent dragEvent, Movable dragObject) { View view = getWwd().getView(); EllipsoidalGlobe globe = (EllipsoidalGlobe) getWwd().getModel().getGlobe(); // Compute ref-point position in screen coordinates. Position refPos = dragObject.getReferencePosition(); if (refPos == null) return; Vec4 refPoint = globe.computePointFromPosition(refPos); Vec4 screenRefPoint = view.project(refPoint); // Compute screen-coord delta since last event. int dx = dragEvent.getPickPoint().x - dragEvent.getPreviousPickPoint().x; int dy = dragEvent.getPickPoint().y - dragEvent.getPreviousPickPoint().y; // Find intersection of screen coord ref-point with globe. double x = screenRefPoint.x + dx; double y = dragEvent.getMouseEvent().getComponent().getSize().height - screenRefPoint.y + dy - 1; Line ray = view.computeRayFromScreenPoint(x, y); Intersection inters[] = globe.intersect(ray, refPos.getElevation()); if (inters != null) { // Intersection with globe. Move reference point to the intersection point. Position p = globe.computePositionFromPoint(inters[0].getIntersectionPoint()); dragObject.moveTo(p); } }
/** * Compute the lat/lon position of the view center * * @param dc the current DrawContext * @param view the current View * @return the ground position of the view center or null */ protected Position computeGroundPosition(DrawContext dc, View view) { if (view == null) return null; Position groundPos = view.computePositionFromScreenPoint( view.getViewport().getWidth() / 2, view.getViewport().getHeight() / 2); if (groundPos == null) return null; double elevation = dc.getGlobe().getElevation(groundPos.getLatitude(), groundPos.getLongitude()); return new Position( groundPos.getLatitude(), groundPos.getLongitude(), elevation * dc.getVerticalExaggeration()); }
protected void moveControlPoint( ControlPointMarker controlPoint, Point lastMousePoint, Point moveToPoint) { View view = this.wwd.getView(); Globe globe = this.wwd.getModel().getGlobe(); Position refPos = controlPoint.getPosition(); if (refPos == null) return; Line ray = view.computeRayFromScreenPoint(moveToPoint.getX(), moveToPoint.getY()); Line previousRay = view.computeRayFromScreenPoint(lastMousePoint.getX(), lastMousePoint.getY()); Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), ray); Vec4 previousVec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), previousRay); if (vec == null || previousVec == null) { return; } Position pos = globe.computePositionFromPoint(vec); Position previousPos = globe.computePositionFromPoint(previousVec); LatLon change = pos.subtract(previousPos); java.util.List<LatLon> boundary = new ArrayList<LatLon>(); for (LatLon ll : this.polygon.getOuterBoundary()) { boundary.add(ll); } boundary.set(controlPoint.getIndex(), new Position(pos.add(change), refPos.getAltitude())); // ExtrudedPolygon ensures that the last boundary position is the same as the first. Remove the // last point // before setting the boundary. boundary.remove(boundary.size() - 1); this.polygon.setOuterBoundary(boundary); }
protected boolean isNavSectorVisible( DrawContext dc, double minDistanceSquared, double maxDistanceSquared) { if (!navSector.intersects(dc.getVisibleSector())) return false; View view = dc.getView(); Position eyePos = view.getEyePosition(); if (eyePos == null) return false; // check for eyePos over globe if (Double.isNaN(eyePos.getLatitude().getDegrees()) || Double.isNaN(eyePos.getLongitude().getDegrees())) return false; Angle lat = clampAngle(eyePos.getLatitude(), navSector.getMinLatitude(), navSector.getMaxLatitude()); Angle lon = clampAngle( eyePos.getLongitude(), navSector.getMinLongitude(), navSector.getMaxLongitude()); Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d); double distSquared = dc.getView().getEyePoint().distanceToSquared3(p); //noinspection RedundantIfStatement if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false; return true; }